A couple that have been reviewed in the VOICE Newsletter in the past:
The IBM V.90 PCI Data/Fax Modem - [link|http://www.os2voice.org/VNL/past_issues/VNL0201H/vnewsf4.htm|http://www.os2voice.../vnewsf4.htm]
Also the Actiontec 56K PCI Call Waiting Modem - [link|http://www.os2voice.org/VNL/past_issues/VNL0200H/vnewsf3.htm|http://www.os2voice.../vnewsf3.htm]